Septic Engineer in Volney, NY

Septic design in Volney: the short answer

Volney wraps around the east side of the City of Fulton. The city is sewered; most of Volney is not. A new house, an addition or a failed field in Volney means a septic design stamped by a PE and approved by the Oswego County Health Department before construction.

Short answer: the Sun soil series, whose USDA type location is in the Town of Volney, is poorly drained, and it fills many of the low spots here. Wherever Sun soil sits under the planned field, the design goes up.

Sewer or septic in Volney

Oswego County's proposed regional interceptor would include parts of Volney in a county sewer district tied to the Fulton plant. That is a plan, not a pipe in the ground, and it covers only parts of the town.

For most Volney homes the system on the lot is the system, and any repair beyond routine pumping and baffle work goes through a county approved design.

How a septic design works in Volney

1. Send the address and a few photos. Use the form below. Estimate in 1 hour.
2. Confirm the lot needs septic. Unless the parcel is served by a Fulton sewer extension, plan on septic.
3. Deep hole and perc tests. At least one test hole six feet deep at the leaching area and at least two perc tests per system, per Appendix 75-A. Low ground pits often show gray, mottled soil within a foot or two; rises show drier sand.
4. Design and stamp. Designs are prepared and stamped by a New York licensed Professional Engineer (PE), sized at a minimum of 110 gallons per day per bedroom for a new house.
5. Oswego County plan review. Four sets of plans and the plan review fee go to the Oswego County Health Department, Environmental Health Division, 70 Bunner St., Oswego. The department engineer sends three sets back with a letter of approval or rejection, and a copy of that letter goes to you and to the Town of Volney code enforcement officer.
6. Building permit and install. With the approval letter in hand, the building permit is pulled through the Town of Volney code enforcement office. Backwell coordinates the excavation, tank, distribution box and absorption area and builds them to the approved plan.
7. Final paperwork. For an alternative system such as a raised bed, mound or sand filter, state rule 10 NYCRR 75.5 has a design professional supervise construction and certify to the health department that it matches the approved plans.

Soils and seasonal water around Volney

The Sun series has its type location in the Town of Volney, about three and a half miles east of Minetto. The USDA describes Sun soils as very deep and poorly drained, formed in till from limestone and sandstone, lying in level and concave depressions on till plains with slopes of 0 to 3 percent. A Sun soil profile almost never has the 4 feet of useable soil a conventional field needs.

Volney's rises carry sandier lake plain soils like Colonie and Elnora, and Lamson very fine sandy loam fills depressions near the river. The design starts by finding the best soil on the lot, which is often on the highest ground away from the house.

What the health department checks

Oswego County reviews septic plans itself, at its Environmental Health Division in Oswego. The state sets the floor in Appendix 75-A; a local health department may adopt stricter standards, but not looser ones without a state waiver. On a lot in Volney the review comes down to a handful of measured items:

• Conventional trench field: at least 4 feet of useable soil above rock, tight soil and the high seasonal groundwater, with the highest groundwater at least 2 feet below the trench bottom.
• Raised system: 1 to 2 feet of original soil faster than 60 minutes per inch, high groundwater at least 1 foot below the surface, fill that percs between 5 and 30 minutes per inch, and a taper no steeper than 1 on 3 with at least 20 feet of taper.
• Mound: high groundwater at least 1 foot down, bedrock at least 2 feet down, native soil faster than 120 minutes per inch, slope no more than 12 percent, pressure distribution, and an absorption area no wider than 20 feet.
• 100 feet from an absorption field to a well or suction line, 200 feet if the field sits upgrade and in the drainage path to the well, and 50 feet from the septic tank to a well.

Common Volney site problems and the design fix

Field area sits in a Sun soil depression

Water collects in these low spots. If the PE can find a foot of original soil faster than 60 minutes per inch with groundwater at least a foot down, a raised bed in imported fill; otherwise a mound, which needs native soil faster than 120 minutes per inch.

Footing drains tied into the septic

Older houses sometimes run footing or roof drains to the tank. Appendix 75-A requires roof, footing, garage, cellar and surface drainage to be excluded. The design separates them.

No room for a replacement

The rule asks for a 50 percent reserve area whenever possible. On older Volney lots it was often never kept, so the replacement goes where the soil test and setbacks allow.

What it costs

Published county fees, effective January 1, 2026: $125 for the Oswego County Health Department to review plans for one home and $250 for a commercial system, a category the county applies to businesses and rentals. Selling a house? The county lists a 4 day septic dye test with written results at $230.

Design and install are priced together in writing for your lot. Most Volney replacements on low ground include imported fill and a pump chamber.

Grant money: Oswego County runs the state Septic System Replacement Fund. Its application says eligible projects can be reimbursed up to 50 percent with a $10,000 maximum, design costs at 50 percent up to $3,000, and every replacement must be county approved, engineer designed and covered by a local building permit. The state priority waters for Oswego County are the central and eastern Lake Ontario shoreline and the upper Little Sandy Creek and its tributaries.

Timeline

Spring testing in the depressions, stamped design, $125 county review, building permit, install.

Raised beds built with finer fill must settle six months through a freeze and thaw cycle before construction. The written price includes the schedule.

Sources

• Oswego County Health Department: Septic Plan Review
• Oswego County Health Department: Water Supply Protection and Septic Plan Review
• Oswego County Health Department: Plan Review Fee Schedule, effective 1/1/2026
• Oswego County Health Department: Fee Schedule for Environmental Health Services, 1/1/2026
• Oswego County Community Development, Tourism and Planning: Septic System Replacement Grant Application
• NYS EFC: Septic System Replacement Fund Priority Waterbody List
• 10 NYCRR Appendix 75-A.4: Soil and site appraisal (Table 2 separation distances)
• 10 NYCRR Appendix 75-A.8: Conventional subsurface treatment systems
• 10 NYCRR Appendix 75-A.9: Alternative systems (raised, mound, sand filter)
• 10 NYCRR Appendix 75-A.3: Sewage flows
• 10 NYCRR Section 75.5: Minimum standards, design professional, alternative system approval
• NYSDEC ENB: Southern Oswego County Regional Interceptor Sewer
• USDA NRCS Official Series Description: Sun
• USDA NRCS Official Series Description: Colonie
• USDA NRCS Official Series Description: Lamson

Rules and fees as published by the agencies above when this page was written; they can change. The approved plan for your lot controls.